针对淹没在噪声中的弱信号测量，利用随机共振技术进行了信号检测的研究。
In order to detect weak signals overwhelmed in noise, the method of signal detection is investigated using the principle of stochastic resonance.
为了满足地震勘探高精度、高分辨力的需要，进一步研究了多普勒测量技术和弱信号检测技术。
To meet the seism detections require of high accuracy, high resolving power, the measurement technique of Laser Doppler and detection technique of faint signal are further researched.
同时测量周期越长，仪器对弱信号的识别能力越强，测量误差越小。
It is the longer to measure cycles, the stronger the capability of instrument recognition to the weak signal is, it is the less to measure the error.
同时为了保证测量精度，采用偏置电流极低的运算放大器opa128，并且增大了反馈电阻，以增强对弱信号的响应。
An OPA128 operational amplifier with extreme low bias current and big gain is adopted for enhancing the response to weak signals.
本应变测量系统由仪表放大器ad623和电压电流变送器XTR115构成，实现弱信号放大和电流环信号传输。
The measuring system is composed of instrumental amplifier AD623 and transmitter XTR115 to amplify weak signal and transmit current loop signal.
GJ-4型测头的光电接收器件使用高响应度的雪崩光电二极管，能够对一些弱反射表面获取到较好的测量信号；
Furthermore, the GJ-4 confocal probe uses an avalanche diode with high responsivity. Therefore, it can get better measuring signals from low-reflective surfaces.
在弱灌注条件下，无创脉搏血氧饱和度的测量存在着准确度不高的问题。传感器采集信号的信噪比低是导致该问题的主要原因之一。
Under the condition of low perfusion, the measurement of non-invasive saturation of pulse-blood oxygen is low-accuracy, lower signal-to-noise ratio (SNR) is one of the crucial causations.
系统通过水池调试、水库试验，证实该技术动态范围大、抗干扰能力强、对弱信号具有检测能力强、测量精度高等特点。
The parameters can be recorded by the system. The results from tests at tank and reservoir demonstrated that the technique has characteristics as foll…
系统通过水池调试、水库试验，证实该技术动态范围大、抗干扰能力强、对弱信号具有检测能力强、测量精度高等特点。
The parameters can be recorded by the system. The results from tests at tank and reservoir demonstrated that the technique has characteristics as foll…
应用推荐